/Engine/Source/Runtime/RHI/Public/PipelineStateCache.h
Retrieve the current PSO precache result state (slightly slower than IsPrecaching)
namespace PipelineStateCache { EPSOPrecacheResult PipelineStateCache::CheckPipelineStateInCache ( const [FGraphicsPipelineStateInitializer](API\Runtime\RHI\FGraphicsPipelineStateInitialize-) & PipelineStateInitializer ) }